This system applied in green building industry, requires a more specialized pose than knuckled, but the advantage is a better compacting screed around pipe so that more performing.
Is not so common as the others.
System suitable for all residential constructions such as buildings, villas and cottages.
Outline application is step 10 outside areas and step 15 inner areas.
The tube diameter is 17×2 choice PE Xa or PE-RT (both with evoH oxygen barrier).
Distribution you have to choice between simple manifold and group with reduction temperature (fixed point or with external probe control).

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